diff --git a/clang/lib/Headers/__clang_hip_math.h b/clang/lib/Headers/__clang_hip_math.h
--- a/clang/lib/Headers/__clang_hip_math.h
+++ b/clang/lib/Headers/__clang_hip_math.h
@@ -19,6 +19,9 @@
 #endif
 #include <limits.h>
 #include <stdint.h>
+#ifdef __OPENMP_AMDGCN__
+#include <omp.h>
+#endif
 #endif // !defined(__HIPCC_RTC__)
 
 #pragma push_macro("__DEVICE__")
@@ -258,6 +261,9 @@
 __DEVICE__
 float frexpf(float __x, int *__nptr) {
   int __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   float __r =
       __ocml_frexp_f32(__x, (__attribute__((address_space(5))) int *)&__tmp);
   *__nptr = __tmp;
@@ -343,6 +349,9 @@
 __DEVICE__
 float modff(float __x, float *__iptr) {
   float __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   float __r =
       __ocml_modf_f32(__x, (__attribute__((address_space(5))) float *)&__tmp);
   *__iptr = __tmp;
@@ -423,6 +432,9 @@
 __DEVICE__
 float remquof(float __x, float __y, int *__quo) {
   int __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   float __r = __ocml_remquo_f32(
       __x, __y, (__attribute__((address_space(5))) int *)&__tmp);
   *__quo = __tmp;
@@ -479,6 +491,9 @@
 __DEVICE__
 void sincosf(float __x, float *__sinptr, float *__cosptr) {
   float __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   *__sinptr =
       __ocml_sincos_f32(__x, (__attribute__((address_space(5))) float *)&__tmp);
   *__cosptr = __tmp;
@@ -487,6 +502,9 @@
 __DEVICE__
 void sincospif(float __x, float *__sinptr, float *__cosptr) {
   float __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   *__sinptr = __ocml_sincospi_f32(
       __x, (__attribute__((address_space(5))) float *)&__tmp);
   *__cosptr = __tmp;
@@ -799,6 +817,9 @@
 __DEVICE__
 double frexp(double __x, int *__nptr) {
   int __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   double __r =
       __ocml_frexp_f64(__x, (__attribute__((address_space(5))) int *)&__tmp);
   *__nptr = __tmp;
@@ -883,6 +904,9 @@
 __DEVICE__
 double modf(double __x, double *__iptr) {
   double __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   double __r =
       __ocml_modf_f64(__x, (__attribute__((address_space(5))) double *)&__tmp);
   *__iptr = __tmp;
@@ -971,6 +995,9 @@
 __DEVICE__
 double remquo(double __x, double __y, int *__quo) {
   int __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   double __r = __ocml_remquo_f64(
       __x, __y, (__attribute__((address_space(5))) int *)&__tmp);
   *__quo = __tmp;
@@ -1029,6 +1056,9 @@
 __DEVICE__
 void sincos(double __x, double *__sinptr, double *__cosptr) {
   double __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   *__sinptr = __ocml_sincos_f64(
       __x, (__attribute__((address_space(5))) double *)&__tmp);
   *__cosptr = __tmp;
@@ -1037,6 +1067,9 @@
 __DEVICE__
 void sincospi(double __x, double *__sinptr, double *__cosptr) {
   double __tmp;
+#ifdef __OPENMP_AMDGCN__
+#pragma omp allocate(__tmp) allocator(omp_thread_mem_alloc)
+#endif
   *__sinptr = __ocml_sincospi_f64(
       __x, (__attribute__((address_space(5))) double *)&__tmp);
   *__cosptr = __tmp;
diff --git a/clang/test/Headers/Inputs/include/omp.h b/clang/test/Headers/Inputs/include/omp.h
new file mode 100644
--- /dev/null
+++ b/clang/test/Headers/Inputs/include/omp.h
@@ -0,0 +1,21 @@
+#ifndef __OMP_H
+#define __OMP_H
+
+#if _OPENMP
+// Follows the pattern in interface.h
+// Clang sema checks this type carefully, needs to closely match that from omp.h
+typedef enum omp_allocator_handle_t {
+  omp_null_allocator = 0,
+  omp_default_mem_alloc = 1,
+  omp_large_cap_mem_alloc = 2,
+  omp_const_mem_alloc = 3,
+  omp_high_bw_mem_alloc = 4,
+  omp_low_lat_mem_alloc = 5,
+  omp_cgroup_mem_alloc = 6,
+  omp_pteam_mem_alloc = 7,
+  omp_thread_mem_alloc = 8,
+  KMP_ALLOCATOR_MAX_HANDLE = ~(0U)
+} omp_allocator_handle_t;
+#endif
+
+#endif